How secure is Linux system disk encryption?

Question

Encryption

Hello!
To be clear, I'm a newbie.
I ask you, please tell me:

1. How secure is the standard system disk encryption in the latest versions of Manjaro or Ubuntu? (The one that is configured during installation)

2. How difficult is it to crack the disk to extract data?

3. Would you use this encryption method if you needed to work with sensitive data that needs to be protected?

4. Can you give any practical advice on how to set up strong encryption?

Thank you very much in advance!

PS: Please, please do not write something from the category of "soldering iron rectally and everything will be deciphered." I'm interested in the technical side of the issue. Be understanding.

Answer 1

Your questions are meaningless until the offender model is identified. The technical side of the issue can be considered separately exactly until the start of administrative actions (and the withdrawal of a computer is an administrative action). After the start of such actions, it makes no sense to consider the technical side in isolation from the administrative one - if in your model of the offender this is the state, it makes no sense to encrypt at all - because it will still get access - just a "soldering iron".
There is no "purely technical" side to the issue of confrontation with the state. People who come to confiscate - they may not understand the word "server", but they understand well how to get answers to their questions :)
And so - encryption is quite reliable, for example, in case of loss, and in any case, when the intruder's model excludes the "soldering iron".

Answer 2

Purely from practice.
There was a familiar owner of a wholesale base for the sale of alcohol.
Partition encryption has been configured. That is, until he comes and enters through the console and enters the password 1c, the balls will not appear.
I didn’t know the passwords themselves, and in general I didn’t try. Vano dealt with it himself.
But as you correctly noted above, you are unlikely to oppose something against a "soldering iron" or "5 years".
So take into account the situation that the chief accountant and the general director pretend to be hoses, they say that boy over there is working with computers and you raise the term from the ground. Do you need it?

Answer 3

From a mathematical point of view, it is very reliable; there were no precedents for hacking, although they were seized in different countries